Electrically switchable structural patterns and diffractions in a dual frequency nematic liquid crystal  

作　　者：宋振鹏 李子扬 尚小虎 李超逸 马玲玲 陆延青 李炳祥 Zhenpeng Song;Ziyang Li;Xiaohu Shang;Chaoyi Li;Lingling Ma;Yanqing Lu;Bingxiang Li(College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,China;National Laboratory of Solid State Microstructures,Key Laboratory of Intelligent Optical Sensing and Manipulation,College of Engineering and Applied Sciences,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210023,China)

机构地区：[1]College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,China [2]National Laboratory of Solid State Microstructures,Key Laboratory of Intelligent Optical Sensing and Manipulation,College of Engineering and Applied Sciences,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210023,China

出　　处：《Chinese Optics Letters》2023年第1期38-43,共6页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2021YFA1202000);National Natural Science Foundation of China(Nos.52003115 and RK106LH21001);Natural Science Foundation of Jiangsu Province(Nos.BK20212004 and BK20200320).

摘　　要：Electrically driven structural patterns in liquid crystals(LCs)have attracted considerable attention due to their electrooptical applications.Here,we disclose various appealing reconfigurable LC microstructures in a dual frequency nematic LC(DFNLC)owing to the electroconvection-induced distortion of the LC director,including one-dimensional rolls,chevron pattern,two-dimensional grids,and unstable chaos.These patterns can be switched among each other,and the lattice constants are modulated by tuning the amplitude and frequency of the applied electric field.The electrically switchable self-assembled microstructures and their beam steering capabilities thus provide a feasible way to tune the functions of DFNLC-based optical devices.

关 键 词：dual frequency liquid crystals pattern formation GRATINGS diffractions 

分 类 号：TN2[电子电信—物理电子学]